History of Brazil
Brazilian Revolution
The Economic “Miracle” Brazil: Five Centuries of Change
Empire of Brazil (Pahlavireich), Alternative History
The Brazilian Revolution of 1930 and the Aftermath
Brazilian Revolution of 1930, Military Wiki
The Brazilian Revolution of 1930, Causes and Aftermath: The Historian: Vol 9, No 1
Grande Seca - Wikiwand
Spain: From Revolution to Counter-Revolution - a reading guide